1 /* 2 * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 package org.graalvm.compiler.hotspot.nodes; 24 25 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_10; 26 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_6; 27 28 import org.graalvm.compiler.core.common.type.StampFactory; 29 import org.graalvm.compiler.graph.NodeClass; 30 import org.graalvm.compiler.hotspot.HotSpotLIRGenerator; 31 import org.graalvm.compiler.lir.StandardOp.SaveRegistersOp; 32 import org.graalvm.compiler.nodeinfo.NodeInfo; 33 import org.graalvm.compiler.nodes.FixedWithNextNode; 34 import org.graalvm.compiler.nodes.ValueNode; 35 import org.graalvm.compiler.nodes.spi.LIRLowerable; 36 import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool; 37 38 /** 39 * Emits code to leave (pop) the current low-level stack frame. This operation also removes the 40 * return address if its location is on the stack. 41 */ 42 @NodeInfo(cycles = CYCLES_10, size = SIZE_6) 43 public final class LeaveCurrentStackFrameNode extends FixedWithNextNode implements LIRLowerable { 44 45 public static final NodeClass<LeaveCurrentStackFrameNode> TYPE = NodeClass.create(LeaveCurrentStackFrameNode.class); 46 @Input SaveAllRegistersNode registerSaver; 47 48 public LeaveCurrentStackFrameNode(ValueNode registerSaver) { 49 super(TYPE, StampFactory.forVoid()); 50 this.registerSaver = (SaveAllRegistersNode) registerSaver; 51 } 52 53 private SaveRegistersOp getSaveRegistersOp() { 54 return registerSaver.getSaveRegistersOp(); 55 } 56 57 @Override 58 public void generate(NodeLIRBuilderTool gen) { 59 ((HotSpotLIRGenerator) gen.getLIRGeneratorTool()).emitLeaveCurrentStackFrame(getSaveRegistersOp()); 60 } 61 62 @NodeIntrinsic 63 public static native void leaveCurrentStackFrame(long registerSaver); 64 }